What is this linear?
 

OK, I got an old linear that I acquired from my late FIL about 20 yrs ago.
It's been in cool clean storage ever since and I'd like to get rid of it. I
tried to sell on ebay till I got mucho alerts to the effect ebay no liking
CB linear listings. I pulled it. I don't know much about radio, but I'm
sure it was a CB linear cuz he never had a ham license. I was advised by
one helpful fellow that I should list it as a ham linear and make no mention
of CB. That makes sense, but I pride myself on being very accurate and
honest about what I sell and so would like some help identifying this
particular piece of hardware, it at all possible.

It has no brand name on it, so I suspect it's a homebrew. It's a very nice
job if it is. It has a 2" high chassis box with one vacuum tube and a
pretty good size transformer mounted on top. A 4" high full cover over that
is machine perferated on 3 sides for cooling.

Transformer: GRAND 11-2206A GT-6974 7578049
vacuum tube: 6805/EL84

On lower front lower chassis, it has an ON/OFF and STDBY switch and one red
light. The meter is a Sonar brand:

S units -- DB
Output 0-30+

Rear lower chassis has IN and OUT antenna jacks and a ground wire terminal and of
course, an AC plug. Overall dimensions with cover on are 6"H X 7"W X 5"D. Weight
approx 6-8lbs.

I don't know if anything can be determined by the above info, but any help
would be appreciated. I can open her up all the way, if that will help.
I'm not real savvy on radio, but do know basic electronics and can identify
different components. Thank you.

nb

What is this linear?
 

notbob wrote in
:

OK, I got an old linear that I acquired from my late FIL about 20 yrs
ago. It's been in cool clean storage ever since and I'd like to get
rid of it. I tried to sell on ebay till I got mucho alerts to the
effect ebay no liking CB linear listings. I pulled it. I don't know
much about radio, but I'm sure it was a CB linear cuz he never had a
ham license. I was advised by one helpful fellow that I should list
it as a ham linear and make no mention of CB. That makes sense, but I
pride myself on being very accurate and honest about what I sell and
so would like some help identifying this particular piece of hardware,
it at all possible.

It has no brand name on it, so I suspect it's a homebrew. It's a very
nice job if it is. It has a 2" high chassis box with one vacuum tube
and a pretty good size transformer mounted on top. A 4" high full
cover over that is machine perferated on 3 sides for cooling.

Transformer: GRAND 11-2206A GT-6974 7578049
vacuum tube: 6805/EL84

On lower front lower chassis, it has an ON/OFF and STDBY switch and
one red light. The meter is a Sonar brand:

S units -- DB
Output 0-30+

Rear lower chassis has IN and OUT antenna jacks and a ground wire
terminal and of course, an AC plug. Overall dimensions with cover on
are 6"H X 7"W X 5"D. Weight approx 6-8lbs.

I don't know if anything can be determined by the above info, but any
help would be appreciated. I can open her up all the way, if that
will help. I'm not real savvy on radio, but do know basic electronics
and can identify different components. Thank you.

nb




The plate dissapation of the tube you described is only about 10 or 20
watts. This is not anything any ham would want.

Ed K7AAT

What is this linear?
 

"Ed" wrote in message
. 192.196...
notbob wrote in
:

OK, I got an old linear that I acquired from my late FIL about 20 yrs
ago. It's been in cool clean storage ever since and I'd like to get
rid of it. I tried to sell on ebay till I got mucho alerts to the
effect ebay no liking CB linear listings. I pulled it. I don't know
much about radio, but I'm sure it was a CB linear cuz he never had a
ham license. I was advised by one helpful fellow that I should list
it as a ham linear and make no mention of CB. That makes sense, but I
pride myself on being very accurate and honest about what I sell and
so would like some help identifying this particular piece of hardware,
it at all possible.

It has no brand name on it, so I suspect it's a homebrew. It's a very
nice job if it is. It has a 2" high chassis box with one vacuum tube
and a pretty good size transformer mounted on top. A 4" high full
cover over that is machine perferated on 3 sides for cooling.

Transformer: GRAND 11-2206A GT-6974 7578049
vacuum tube: 6805/EL84

On lower front lower chassis, it has an ON/OFF and STDBY switch and
one red light. The meter is a Sonar brand:

S units -- DB
Output 0-30+

Rear lower chassis has IN and OUT antenna jacks and a ground wire
terminal and of course, an AC plug. Overall dimensions with cover on
are 6"H X 7"W X 5"D. Weight approx 6-8lbs.

I don't know if anything can be determined by the above info, but any
help would be appreciated. I can open her up all the way, if that
will help. I'm not real savvy on radio, but do know basic electronics
and can identify different components. Thank you.

nb




The plate dissapation of the tube you described is only about 10 or 20
watts. This is not anything any ham would want.

Ed K7AAT


And that is at audio frequencies, IIRC. Lots of guitar amps use that tube in
push-pull, or AB1 single tube config. I'm reaching way back and my memory is
having problems, but I think I'm in the ballpark.

Ed, NM2K

What is this linear?
 

On 2008-08-06, Ed Cregger wrote:

And that is at audio frequencies, IIRC. Lots of guitar amps use that tube in
push-pull, or AB1 single tube config. I'm reaching way back and my memory is
having problems, but I think I'm in the ballpark.

Yes, very common in guitar amps.

nb

What is this linear?
 

On Aug 5, 1:06 pm, notbob wrote:
I was advised by
one helpful fellow that I should list it as a ham linear and make no mention
of CB.

They will still take the auction down. They have been advised of such
false claims.

What is this linear?
 

On Wed, 6 Aug 2008 02:28:38 -0400, "Ed Cregger"
wrote:

|
|"Ed" wrote in message
.192.196...
| notbob wrote in
| :
|
| OK, I got an old linear that I acquired from my late FIL about 20 yrs
| ago. It's been in cool clean storage ever since and I'd like to get
| rid of it. I tried to sell on ebay till I got mucho alerts to the
| effect ebay no liking CB linear listings. I pulled it. I don't know
| much about radio, but I'm sure it was a CB linear cuz he never had a
| ham license. I was advised by one helpful fellow that I should list
| it as a ham linear and make no mention of CB. That makes sense, but I
| pride myself on being very accurate and honest about what I sell and
| so would like some help identifying this particular piece of hardware,
| it at all possible.
|
| It has no brand name on it, so I suspect it's a homebrew. It's a very
| nice job if it is. It has a 2" high chassis box with one vacuum tube
| and a pretty good size transformer mounted on top. A 4" high full
| cover over that is machine perferated on 3 sides for cooling.
|
| Transformer: GRAND 11-2206A GT-6974 7578049
| vacuum tube: 6805/EL84
|
| On lower front lower chassis, it has an ON/OFF and STDBY switch and
| one red light. The meter is a Sonar brand:
|
| S units -- DB
| Output 0-30+
|
| Rear lower chassis has IN and OUT antenna jacks and a ground wire
| terminal and of course, an AC plug. Overall dimensions with cover on
| are 6"H X 7"W X 5"D. Weight approx 6-8lbs.
|
| I don't know if anything can be determined by the above info, but any
| help would be appreciated. I can open her up all the way, if that
| will help. I'm not real savvy on radio, but do know basic electronics
| and can identify different components. Thank you.
|
| nb
|
|
|
|
| The plate dissapation of the tube you described is only about 10 or 20
| watts. This is not anything any ham would want.
|
| Ed K7AAT
|
|
|And that is at audio frequencies, IIRC. Lots of guitar amps use that tube in
|push-pull, or AB1 single tube config. I'm reaching way back and my memory is
|having problems, but I think I'm in the ballpark.
|
|Ed, NM2K
|
|-----------------

12 watts plate dissapation in class A1. They are useful upto 30 MHz or
so. They were also used as RF output stage for some older tube CB
radios in the 60's. You can get about 3.5 watts carrier out in a class
C plate modulated stage. Sufficient for meeting the requirements for
CB. They were definitely more common in audio applications.

james

What is this linear?
 

"cmdr buzz corey" wrote in message
...
On Aug 5, 1:06 pm, notbob wrote:
I was advised by
one helpful fellow that I should list it as a ham linear and make no
mention
of CB.

They will still take the auction down. They have been advised of such
false claims.

I reported an obvious CB amp a few weeks back. It was even
stated in the writeup that it was intended for CB use. Four
reports, and eBay never pulled the auction. Their enforcement
is haphazzard at best.

What is this linear?
 

On 2008-08-08, Tio Pedro wrote:

I reported an obvious CB amp a few weeks back. It was even
stated in the writeup that it was intended for CB use. Four
reports, and eBay never pulled the auction. Their enforcement
is haphazzard at best.

So, in short, there are folks out there who rat out a person posting a CB
linear. Interesting.

nb

What is this linear?
 

What is this linear?
 

"notbob" wrote in message
...
On 2008-08-08, Tio Pedro wrote:
So, in short, there are folks out there who rat out a person posting a
CB
linear. Interesting.

nb

Yeah, amazing isn't it? I worked hard for my commercial
and amateur licenses. And, I intend to protect what I've
earned. Any scoff-law who'd run an illegal amplifier wouldn't
give two hoots about freebanding on the ham bands.